/*
 * Copyright (C) 2019 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.seata.samples.businessservice;

import com.alibaba.fescar.core.context.RootContext;
import com.alibaba.fescar.spring.annotation.GlobalTransactional;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

/**
 * 
 * @author zcb
 * @date 2019年4月9日 上午10:29:24
 */
@RestController
public class HomeController {

    private static final Logger LOGGER = LoggerFactory.getLogger(HomeController.class);

    private static final String SUCCESS = "SUCCESS";
    private static final String FAIL = "FAIL";
    private static final String USER_ID = "U100001";
    private static final String COMMODITY_CODE = "C00321";
    private static final int ORDER_COUNT = 2;

    private final RestTemplate restTemplate;
    private final BusinessApplication.OrderService orderService;
    private final BusinessApplication.StorageService storageService;

    public HomeController(RestTemplate restTemplate, BusinessApplication.OrderService orderService,
                          BusinessApplication.StorageService storageService) {
        this.restTemplate = restTemplate;
        this.orderService = orderService;
        this.storageService = storageService;
    }

    @GlobalTransactional(timeoutMills = 300000, name = "spring-cloud-demo-tx")
    @RequestMapping(value = "/fescar/rest", method = RequestMethod.GET, produces = "application/json")
    public String rest() {

        String result = restTemplate.getForObject(
                "http://127.0.0.1:18082/storage/" + COMMODITY_CODE + "/" + ORDER_COUNT,
                String.class);

        if (!SUCCESS.equals(result)) {
            throw new RuntimeException();
        }

        String url = "http://127.0.0.1:18083/order";
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);

        MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
        map.add("userId", USER_ID);
        map.add("commodityCode", COMMODITY_CODE);
        map.add("orderCount", ORDER_COUNT + "");

        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(
                map, headers);

        ResponseEntity<String> response = restTemplate.postForEntity(url, request,
                String.class);

        result = response.getBody();

        if (!SUCCESS.equals(result)) {
            throw new RuntimeException();
        }

        return SUCCESS;
    }

    @GlobalTransactional(timeoutMills = 300000, name = "spring-cloud-demo-tx")
    @RequestMapping(value = "/fescar/feign", method = RequestMethod.GET, produces = "application/json")
    public String feign() {

        LOGGER.info("business Service Begin ... xid: " + RootContext.getXID());
        String result = storageService.storage(COMMODITY_CODE, ORDER_COUNT);

        if (!SUCCESS.equals(result)) {
            throw new RuntimeException();
        }

        result = orderService.order(USER_ID, COMMODITY_CODE, ORDER_COUNT);

        if (!SUCCESS.equals(result)) {
            throw new RuntimeException();
        }

        return SUCCESS;

    }

}
